FIELD: metallurgy.
SUBSTANCE: invention relates to powder metallurgy, in particular to obtaining samples to determine the best composition of a hard alloy. A layer of nanoparticles of tungsten carbide is laid on the layer of hard-alloyed mixture in the press mould or a layer of nanoparticles of tungsten carbide is placed between the layers of hard-alloyed mixture which is followed by pressing of the both layers. After sintering the mechanical and physical properties as well as structural parametres are evaluated by performing layer-by-layer measurements along the concentration axis including transition zones formed by diffusion of the nanoparticles into the hard alloy.
EFFECT: improved composition of the hard alloy with enhanced mechanical-and-physical properties and a low porosity.
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